Kingdom [Animalia] Linnaeus, 1758 - animals
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Vertebrata Cuvier, 1812 - vertebrates
       Class Mammalia Linnaeus, 1758 - mammals
         Subclass Theria Parker & Haswell, 1897
           Infraclass Eutheria Gill, 1872
             Order †Notoungulata Roth, 1903
               1 Suborder †Notioprogonia Simpson, 1934
               2 Suborder †Toxodontia Owen, 1853
               3 Suborder †Typotheria Zittel, 1892